active galaxy

collocation in English

meaningsofactiveandgalaxy

These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withgalaxy.
active
adjective
uk
/ˈæk.tɪv/us
/ˈæk.tɪv/
busy with a ...
See more atactive
galaxy
noun
uk
/ˈɡæl.ək.si/us
/ˈɡæl.ək.si/
one of the independent groups of stars in ...
See more atgalaxy

(Definition ofactiveandgalaxyfrom theCambridge English Dictionary© Cambridge University Press)

Examplesofactive galaxy

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Light of such intensities could be from active galaxies or supermassive black holes actively absorbing matter.
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His primary research interests are in the fields of quasars, active galaxies and cosmology.
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The first non-visual study of galaxies, particularly active galaxies, was made using radio frequencies.
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Active galaxies typically have strong emission over a large portion of the electromagnetic spectrum making them prime targets for multiwavelength observations.
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His fields of scientific interest include active galaxies, cosmology, and the three-body problem.
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With a redshift of 5.47, light from thisactivegalaxyis estimated to have taken around 12.3 billion light-years to reach us.
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With a redshift of 0.545, light from thisactivegalaxyis estimated to have taken around 5.1 billion years to reach us.
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With a redshift of 0.444, light from thisactivegalaxyis estimated to have taken around 4.5 billion years to reach us.
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His research focuses on transient objects in the universe such as gamma-ray bursts, supernovae andactivegalaxyflares.
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A galaxy having an active nucleus is called anactivegalaxy.
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Anactivegalaxyis a formation that emitts a significant amount of its energy from a source other than its stars, dust and gas.
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With a redshift of 3.77, light from thisactivegalaxyis estimated to have taken around 11.7 billion years to reach us.
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A radio galaxy is anactivegalaxythat is very luminous in the radio portion of the spectrum, and is emitting immense plumes or lobes of gas.
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Located at a distance of 77 million light-years with a redshift of 0.00555, it is anactivegalaxywith a supermassive black hole at its core.
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They are now accepted as a type ofactivegalaxywhere the enormous energy output results from matter falling into a massive black hole in the center of the galaxy.
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It is classified as anactivegalaxybecause the supermassive black hole at its nucleus is accreting matter, which produces two jets of matter from the poles.
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It would, of course, also be interesting to investigate the possibility of finding regions suitable for life in elliptical, lenticular, irregular and active galaxies.
From theCambridge English Corpus
The problem with this method is that hosts of active galaxies may not be typical of galaxies at their redshift.
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Wikipedia
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Water masers are useful to observe nuclear accretion disks in active galaxies.
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Quasars are the furthest active galaxies, some of them being observed at distances 12 billion light years away.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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See other collocations withgalaxy